Fume-destroying composition.



UNITED STATES PATENT OFFICE.

STEWART W. YOUNG, OF-IALO ALTO, CALIFORNIA, ASSIGNOR TO GLOBE CHEMICAL WORKS, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

FUME-DESTROYING COMPOSITION.

No Drawing.

amount of unburned or partially burned dynamite.

The object of the present invention is to 4 provide a composition which will not only effect the neutralization of the nitrous or acid fumes, but will also result in the ultimate combustion of the'explosive materials so that there will be no unburned or partially burned dynamite. To ellect this result I employ a mixture of ammonium carbonate and a suitable oxygenizing agent. Under the conditions of the explosion, the oxygen becomes available for the combustion of the minute particles of unburned dynamite.

I have found by a series of experiments extending overa considerable period of time and under actual working conditions, especially in several of the mines of Nevada, that by using a cartridge containing a mix- Copies of this ea en; may be obtained for me cents each, by addressing the Washington, 17.

Specification of Letters Patent.

Patented Oct. 31, 1911.

Application filed February 15, 1911. J Serial No. 608,754.

tureof ammonium carbonate and a carrier 0; xygen, the gases resulting from the explosion aresweet, and inofiensive. Among the carriers of oxygen with which I have operated and which have done-the work successfully, are the following :-1,- potassiumchlorate; 2, potassium bichromate; 3, potassium permanganate; manganese dioxid. All give excellent results, and must be looked upon as equivalent, one to the other in their action, and to any other carrier of oxygen which will accomplish the same result. Manganese dioxid is the cheapest of such oxygen carriers, and when used in the proportion'of 65 parts of ammonium carbonate to parts of manganese dioxid gives thoroughly satisfactory results. In practice, a cartridge or capsule containing the composition is Placed in the blast hole with the explosive and the blast discharged in the ordinary way.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- A fume destroying cartridge containing'35 parts manganese dioxid and 65 parts ammonium carbonate.

In testimony whereof I have hereunto set my hand in the presence of subscribing witnesses.

oTEWART W. YOUNG. Witnesses:

J. NIELSEN, B. P] HALL, Hmuinn'r Coomncn.

Commissioner of Patents, 

